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[Bug middle-end/23971] [4.0/4.1 Regression] synth_mult running amok
- From: "cvs-commit at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 21 Sep 2005 16:48:14 -0000
- Subject: [Bug middle-end/23971] [4.0/4.1 Regression] synth_mult running amok
- References: <20050919192030.23971.tsv@solvo.ru>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-09-21 16:48 -------
Subject: Bug 23971
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: kazu@gcc.gnu.org 2005-09-21 16:47:47
Modified files:
gcc : ChangeLog
Log message:
PR middle-end/23971
* expmed.c (alg_code): Add alg_impossible.
(alg_hash_entry): Add cost.
(synth_mult): Record alg_impossible in the hash table if
multiplication by a given integer is impossble within the
limit. Speed up using alg_impossible.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.9997&r2=2.9998
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23971